Hydraulic valve lifter plunger puller



Nov. 26, 1957 c. L. KESSELL 2,814,098

HYDRAULIC VALVE LIFTER PLUNGER PULL-ER Filed Feb. 15, 1956 2Sheets-Sheet 1 (a a l8 8 l G gill 3 i415 za /4 ($12; P/&

gill 2 24 20 Clifton L. Kesse/l IN V EN TOR.

Nov. 26, 1957 c. L. KESSELL 2,814,098

HYDRAULIC VALVE LIFTERPLUNGER FULLER Filed Feb. 15, 1956 2 Sheets-Sheet2 UnitedStates Patent 2,814,098 HYDRAULIC VALVE LIFTER PLUNGER PULLER VClifton L. Ke ssell, Denver, Colo.

Application February 15, 1956, Serial No. 565,625 2 3 Claims. (01.29-267) This invention relates to tools for extracting the plunger fromhydraulic valve lifter bodies.

An object of'the present invention is to provide an improved tool forextracting the plunger from a valve lifter body with a minimum of effortand without causing material 'injury to the plunger so that it may bereused.

When a hydraulic valve lifter of the type presently used in automotivevehicle engines requires servicing or repair, it is necessary to removethe plunger therefrom. Inasmuch as the plunger is mounted in the body ofthe valve lifter with a very close tolerance, it is diflicult to removethe plunger. Moreover the valve lifters are not readily accessible tothe mechanic in some types of engines. It is a primary object of thepresent invent-ion to provide a valve lifter plunger extraction toolwhich functions to' remove the plunger without injuring it and whichaccomplishes the job with a minimum of efiort all of the controls forthe tool being at the upper, outer end thereof.

A further object of the invention is to provide a practical device forremoving valve lifter plungers, this device being constructed in such away that it does the job effectively and safely.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming apart hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure 1 is a perspective View of the tool which embodies the principlesof the invention} Figure 2 is a longitudinal sectional view of the toolof Figure 1, showing the same after it has been inserted in the plungerof a valve lifter;

Figure 3 is a longitudinal sectional view of the valve lifter plungerextractor while it is being used to extract the plunger from the valvelifter body;

Figure 4 is a transverse sectional view taken on the line 44 of Figure2;

Figure 5 is a transverse sectional View taken on the line 5-5 of Figure2; and

Figure 6 is a fragmentary perspective view of the extractor.

One of the very common types of valve lifters presently found inautomotive, internal combustion engines is seen in Figures 3 and 4. Itincludes a cylindrical valve lifter body 10 in the bore 12 of whichthere is a cylindrical plunger 14. The plunger outer surface fits thebore walls with a close tolerance. The upper end of the body 10 istapered as at 16 and has a groove 18 near the taper to accommodate thelocking ring that holds the cap in place. In Figures 2 and 3 the valvelifter is shown without the locking ring and cap, these two parts of thevalve lifter having been removed. However, the other parts are present,in-

cluding the valve lifter spring 20, ball check 22 and retainer 24 forthe ball. This ball check coacts with the orifice 26 in the lower Wallof the plunger 14 for valving the same in the functioning of the valvelifter.

Patented Nov. 26, 1957 An extractor 28 is insertable in the bore 30 ofplunger 14. This extractor consists of a sleeve having a knurled orscored outer surface which is adapted to engage the inner surface of theplunger 14. A longitudinal slot 32 is formed in the wall of the sleeve28 so that the extractor is capable of being spread. After spreading,the extractor returns due to the inherent resiliency of the metal fromwhich the extractor is made. There is an upper taper 34 in the bore 36of extractor 28, together with a lower taper 38 at the lower end of theextractor.- These tapers are generally in the shape of a frustum of acone in order that the similarly shaped head 40 on extractor rod 42' mayseat on the wall of the taper 38.

Extractor '42 consists of a rod having the enlargement at one end whichconstitutes head 40 and having threads 44 at the opposite end. A nut 46is threaded on threads 44 and has an operating handle 48 connectedtherewith. The connection is made by trunnions 5t) and 52 carried inaligned passages formed in the nut 46. Handle 48 has a yoke 54 at one,end, the sides of whichaccommodate trunnions 50 and 52. One edge 56 ofeach of the sides 54 is curved and functions as a cam.

A sleeve 60 is placed over the extractor rod 42, the latter having aseat 64 at its upper end on which the earns 56 are movable. The lowerend of the sleeve 60 is reduced as at 70 in orderto provide ampleclearance in the operation thereof. The extreme end of sleeve 60 isadapted to come to rest upon the upper surface of extractor 28 (Figure6) in order to prevent the sleeve 60 from moving with respect to thespreader 28.

A housing 74 has sleeve 60 inserted in the cylindrical bore 76 thereof.The lower end of bore 76 is counterbored as at 78 to accommodate thereduced extension-80 of collar 82. The lower edge of collar 82 isadapted to seat upon the upper surface of the hydraulic valve lifterbody 10 while housing 74 is elevated. This is accomplishedby having alever 86 pivoted at one end to the housing 74. The pivotal connection ismade by utilizing a yoke 88, to the sides of which there are trunnions89 and 90, the latter being pivoted in aligned openings formed in thehousing 74. Links 92 and 94 are pivoted to the lever 86 between the endsthereof and to the collar 82. Upper pivots 96 are used to connect thelinks to the lever 86, while lower pivot pins 97 are used to connect thelower ends of the links to the collar 82.

In operation the extractor 28 is inserted in the bore 30 of the plunger14. This extractor has a bore 36 which is tapered at both ends so thatwhen the extractor is spread it will spread evenly and will not distortso as to apply undue stresses to the plunger 14. This is accomplished bythe weakening of the top part of the spreader through the removal of themetal thereof in order to form the upper bevel 34. Then handle 48 isrotated thereby rotating nut 46 on the threaded end of extractor rod 42.This pulls the head 40 into the taper 38 of the spreader 28 and forcesits knurled surface 28 against the bore 30 of plunger 14. Finalspreading takes place by rotating handle 48 about the axes of trunnions50 and 52 thereby bringing the cam surfaces 56 upon the top surfaces ofthe seat 64 and pulling extractor rod 42 axially with respect to itssupporting sleeve 60. This further spreads the spreader by pulling head49 into the tapered bore thereof.

. With collar 82 seated upon the upper end of the hydraulic valve lifterbody 10, application of a force to lever 86 will cause links 92 and 94to exert a downward force to be applied to the collar 82. At the sametime the reaction of this force is applied to housing 74, but thereaction is in the opposite direction. This reaction force lifts housing74 and with it, the sleeve 60 whose seat 64 contacts the upper end ofhousing 74. The lifting of the sleeve 60 causes the extraction rod 42 tobe lifted inas- 3 much as the handle 48 prevents relative axial movementof the extraction rod 42 and its sleeve 60. Therefore, the valve lifterplunger is removed from the valve lifter body in this way.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly, all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

1. For use with a valve lifter body provided with a plunger having abore, a tool for extracting the plunger, said tool comprising a housing,a collar, a linkage pivotally connected to said collar, a lever to whichsaid linkage is connected, said lever being pivoted to said housing sothat upon manipulation of said lever said collar is moved with respectto said housing, a sleeve in said housing, an extractor rod slidable insaid sleeve, said rod having a head, a spreader on said head, means foraxially moving said extractor rod to move said head into said spreaderto expand the spreader, said spreader having an outer surface adapted tofit against the bore of said plunger and said collar adapted to rest onthe body of the valve lifter so that when said lever is manipulated,said housing and collar are spread with respect to each other to therebypull said sleeve, rod and extractor outwardly of the body whereby theplunger is removed.

2. For use with a valve lifter body provided with a plunger having abore, a tool for extracting the plunger, said tool comprising a housing,a collar, a linkage pivotally connected to said collar, a lever to whichsaid linkage is connected, said lever being pivoted to said housing sothat upon manipulation of said lever said collar is moved with respectto said housing, a sleeve in said housing, an extractor rod slidable insaid sleeve, said rod having a head, a spreader on said head and adaptedto be expanded by said head, said spreader having an outer surfaceadapted to fit against the bore of said plunger and said collar adaptedto rest on the body of the valve lifter so that when said lever ismanipulated, said housing and collar are spread with respect to eachother to thereby pull said sleeve, rod and extractor outwardly of thebody whereby the plunger is removed, a nut on said rod, means to axiallymove said rod including a handle connected to said nut for rotating saidnut, and a seat connected to said sleeve on which said handle bears sothat said rod may be adjusted with respect to said sleeve.

3. For use with a valve lifter body provided with a plunger having abore, a tool for extracting the plunger, said tool comprising a housing,a collar, a linkage pivotally connected to said collar, a lever to whichsaid linkage is connected, said lever being pivoted to said housing sothat upon manipulation of said lever said collar is moved with respectto said housing, a sleeve in said hous ing, an extractor rod slidable insaid sleeve, said rod having a head, a spreader on said head and adaptedto be expanded by said head, said spreader having an outer surfaceadapted to fit against the bore of said plunger and said collar adaptedto rest on the body of the valve lifter so that when said lever ismanipulated, said housing and collar are spread with respect to eachother to thereby pull said sleeve, rod and extractor outwardly of thebody whereby the plunger is removed, a nut on said rod, means to axiallymove said rod including a handle connected to said nut for rotating saidnut, a seat connected to said sleeve on which said handle bears so thatsaid rod may be adjusted with respect to said sleeve, the lower end ofsaid sleeve contacting said extractor so that upon adjustment of saidrod the head thereof is displaced with respect to the bore of saidextractor.

References Cited in the file of this patent UNITED STATES PATENTS1,371,861 Clark Mar. 15, 1921 2,010,906 Wheeler Aug. 13, 1935 2,233,232Wilkinson Feb. 25, 1941 2,373,307 Goddard et a1 Apr. 10, 1945

